Catheter placement system utilizing a handle, a sharp, and a releasable retainer mechanism providing retraction of the sharp upon disengagement of the catheter from the handle
Patent 5562629 Issued on October 8, 1996. Estimated Expiration Date: 
December 23, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
December 23, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2722215 2841143 3825003 Needle-hub assembly for syringes Shielded needle Needle container and method for preventing accidental contact with a needle Retractable safety needle Cannula insertion set with safety retracting needle Dental syringe having an automatically retractable needle Safety catheter InventorsApplicationNo. 363127 filed on 12/23/1994US Classes:604/158, Body entering conduit axially movable within body piercing conduit while former is disposed in the body604/195, Portion of body entering conduit stored in material receiving syringe reservoir604/198Cover or protector for body entering conduit movable axially relative to one anotherExaminersPrimary: Yasko, John D.Attorney, Agent or FirmInternational ClassA61M 005/178AbstractA trocar and catheter assembly for automatically disarming the trocar after placement of the catheter into a patient's blood vessel includes a spring urging retraction of the trocar and a releasable retainer mechanism for maintaining the trocar in an extended position during insertion of the catheter into the blood vessel. The catheter is removably mounted to a handle which defines an internal passage. Disengaging the handle from the catheter after placement of the catheter into the blood vessel actuates the releasable retainer mechanism for allowing the trocar to be drawn into the handle passage under the influence of a spring, to enclose the sharpened end of the trocar after use.Field of SearchHaving cover or protector for body entering conduitCover or protector for body entering conduit movable axially relative to one another Having means for preventing reuse of device Removable cover or protector for body inserted conduit Body entering conduit axially movable within body piercing conduit while former is disposed in the body Body piercing condit (e.g., needle, etc.) Specific structure for preventing or minimizing inconvenience casued by breakage during insertion of conduit into body Specific structure for preventing coring of body tissue TELLTALE SHOWING ENTRY OF BLOOD INTO BODY INSERTED CONDUIT | |
